Method, apparatus and programs for generating and utilizing content signatures
US7289643B2 · kind B2 · utility
380Cited by
177References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Apr 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to deriving and utilizing content signatures. A content signature is a representation of a content item, which is derived from the content item itself. According to the invention, a method of generating a content signature for a signal is provided. The method includes the steps of: i) dividing the signal into at least one set; ii) transforming the set into a frequency-based domain; iii) determining features of the transformed set; and iv) grouping the features so as to form a content signature of the set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.